<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <meta name="xbsj-labels" content="Earth示例">
    </meta>
    <title>Pin-div</title>
    <!-- 0 引入js文件：XbsjEarth.js和vue.min.js -->
    <script src="../../XbsjEarth/XbsjEarth.js"></script>
    <script src="./scripts/vue.min.js"></script>
    <style>
        html,
        body {
            width: 100%;
            height: 100%;
            margin: 0px;
            padding: 0px;
        }

        .checkbox {
            cursor: pointer;
        }

        .dialog {
            position: absolute;
            width: 80px;
            min-height: 60px;
            color: white;
            background-image: url("./images/dialog.png");
            background-size: 100% 100%;
            padding: 5px;
            border-radius: 5px;
            cursor: pointer;
        }
    </style>
</head>

<body>
    <div id="vueApp" style="width: 100%; height: 100%; background: grey; position: relative; overflow: hidden;">
        <earth-comp></earth-comp>
    </div>

    <script>
        // 1 创建Earth的vue组件
        var EarthComp = {
            template: `
                <div style="width: 100%; height: 100%;">
                    <div ref="earthContainer" style="width: 100%; height: 100%">
                    </div>
                    <div class="box" style="position: absolute; left: 18px; top: 18px; color: white; background: rgba(0, 0, 0, 0.6); padding: 20px; border-radius: 25px;min-width:210px; font-size:24px; font-family: 宋体;">
                        <span>左边距离:{{winPos[0] | numFilter}}米</span><br/>
                        <span>底部距离:{{winPos[1] | numFilter}}米</span>
                    </div>
                    <div 
                        v-show="showInfo" 
                        class="dialog"
                        @click = fly
                        :style="{ left: (winPos[0] - 62) + 'px', bottom: winPos[1] + 'px' }"
                    >
                        <span>点击飞入大雁塔！</span>
                    </div>
                </div>
            `,
            data() {
                return {
                    _earth: undefined, // 注意：Earth和Cesium的相关变量放在vue中，必须使用下划线作为前缀！
                    showInfo: true,
                    winPos: [0, 0],
                };
            },
            // 1.1 资源创建
            mounted() {
                // 1.1.1 创建地球
                var earth = new XE.Earth(this.$refs.earthContainer);
                earth.interaction.picking.enabled = true;

                // 1.1.2 场景配置
                earth.sceneTree.root = {
                    "expand": true,
                    "title": "预览场景",
                    "children": [{
                        "ref": 'tileset',
                        "czmObject": {
                            "name": '大雁塔',
                            "xbsjType": "Tileset",
                            "url": '../assets/dayanta/tileset.json',
                            "xbsjUseOriginTransform": false,
                            "skipLevelOfDetail": false
                        },
                    }, {
                        "ref": 'pin1',
                        "czmObject": {
                            "name": 'Pin1',
                            "xbsjType": "Pin",
                            "position": [1.9017005694855162, 0.5972477268978722, 488.7695178987821],
                            "near": 300,
                            "show": false
                        },
                    }, {
                        "czmObject": {
                            "name": '默认影像',
                            "xbsjType": "Imagery",
                            "xbsjImageryProvider": XE.Obj.Imagery.defaultImageryProviderConfig,
                        },
                    }]
                };

                var tileset = earth.sceneTree.$refs.tileset.czmObject;
                var pin1 = earth.sceneTree.$refs.pin1.czmObject;

                // 1.1.5 数据绑定
                XE.MVVM.track(this, 'winPos', pin1, 'winPos');

                // 监控数据
                this.uw = XE.MVVM.watch(earth.camera, 'position', () => {
                    // xepd: xepositionDistance的缩写
                    // pin1.position.xepd(earth.camera.position): 计算相机和pin之间的距离
                    const d = pin1.position.xepd(earth.camera.position);
                    if (d < 100) {
                        this.showInfo = false;
                    } else {
                        this.showInfo = true;
                    }
                });

                this._earth = earth;

                // only for Debug
                window.earth = earth;
                window.tileset = tileset;
                window.pin1 = pin1;
            },
            methods: {
                fly() {
                    console.log('即将飞入大雁塔！');
                    const position = [1.901729390218574, 0.5972202012953493, 594.3184362850787];
                    const rotation = [5.538756509291041, -0.5562768563795704, 6.280692859184528];
                    this._earth.camera.flyTo(position, 0, rotation);
                }
            },
            filters: {
                numFilter(value) {
                    // 截取当前数据到小数点后两位
                    let realVal = parseFloat(value).toFixed(2)
                    return realVal
                }
            },
            // 1.2 资源销毁
            beforeDestroy() {
                // vue程序销毁时，需要清理相关资源
                this._earth = this._earth && this._earth.destroy();
            },
        }

        // 2 创建vue程序
        // XE.ready()用来加载Cesium.js等相关资源
        XE.ready().then(() => {
            var app = new Vue({
                el: '#vueApp',
                components: {
                    EarthComp,
                },
            });
        });
    </script>
</body>

</html>